S	M	T	W	T	F	S
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30	31

S	M	T	W	T	F	S
	1	2	3	4
5	6	7	8	9	10	11
12	13	14	15	16	17	18
19	20	21	22	23	24	25
26	27	28	29	30

S	M	T	W	T	F	S
	1	2
3	4	5	6	7	8	9
10	11	12	13	14	15	16
17	18	19	20	21	22	23
24	25	26	27	28	29	30
31

S	M	T	W	T	F	S
	1	2	3	4	5	6
7	8	9	10	11	12	13
14	15	16	17	18	19	20
21	22	23	24	25	26	27
28	29	30	31

S	M	T	W	T	F	S
	1	2	3
4	5	6	7	8	9	10
11	12	13	14	15	16	17
18	19	20	21	22	23	24
25	26	27	28	29

Timeline

Pfhorever v2.0b1

A pretty nice arena in the style of Waldo World. Package also comes with a version for M1.

MNB's Pfhorever

A modification of Pfhorever (also available here) whereby the secrets are easier to get to, and the arena is open-air.

Bob Hot Air Popper

A small arena with a neat little novelty first seen in one of Fusion's M1 maps. Looks better in M2, in my opinion... PPC-only (zero-length line error).

M2-Showered with Grenades

A nice conversion of Bungie's M1 level. Feels a lot like the original. Great for nostalgia...

Object Placement Editor 1.4

OPE is a quick way to add/remove different aliens on the net levels. Easier than doing the same thing with Mia or MME. This version fixes a few bugs.

Pfhlush After Using

A very big map, mostly underwater. Some nice tricks. A little bit of texture smearing in a couple of places, but nothing horrible. PPC-Only (zero length line).